Hydraulically operated sprinkler



June 30, 1953 l R. swANK 2,643,643'

I HYDRAULICALLY OPERATED SPRINKLER Filed Nov. 1o, 195o 2 sheets-sheet 2 INVENToR. 6W/.5' SWANK @MMM ATTORNET VPatented June 30, 1953 UNITED g STATES orFicE 2 Claims.

The present invention relates to an hydraulically operated sprinkler and it consists in the combinations, constructions and arrangements of parts herein described and claimed.

Generally, the invention provides a sprinkler having an elongated sprinkler head which is adapted to be oscillated by a motor securing its power from the flow of water therethrough. The device includes many improvements over my oopending application, Serial No. 765,379, led August l, 1947, now abandoned. For example, novel means is provided for cushioning the shock customarily attendant to such devices at the end of each power stroke. Again, novel means is provided for the now of fluid through the motor forming a part of the invention vand all moving parts exterior to the motor housing have been eliminated.

An object of the invention is the provision of a sprinkler wherein novel means and mechanism is provided for utilizing the pressure of water passing therethrough for actuating an oscillating sprinkler head.

Another object of the invention is the Vprovision of a sprinkler incorporating a pressure actuated power unit having a novel arrangement of valves therein.

A further object of the invention is the provision of novel shock absorbing means in a device of the character set forth.

. Another object of the inventionis the provision of a device of the character set forth which is comparatively simple in construction, inexpensive to manufacture and yet effective and efficient in use.

Other and further objects of the invention will become apparent from a reading of the following specication taken in conjunction with the drawings, in which: A

Figure 1 is a sectional view taken along line I-I of Figure 3,

Figure 2 is a sectional View, partly broken away, taken along line 2 2 of Figure 3,

Figure 3 is an exploded sectional view taken along line 3-3 of Figure 1,

Figure 4 is an elevational view, partly broken away, of an outer cylindrical member forming a part of the invention,

Figure 5 is an elevational view of an inner cylindrical member forming a part of the invention, and

Figure 6 is a fragmentary transverse sectional view of a housing forming a part of the invention.

Referring more particularly to the drawings,

there is shown therein a sled-like horizontally extending base I0 having integrally formed upwardly extending sides II an upwardly curving rear lip I2 and an upwardly turned forwardly extending lip I3. A motor housing is provided and consists of a pair of complementary sections I4 and I5 each provided respectively with transversely extending base langes I6 and Il which are aixed to the sled-like base I 0. f I

The sections I4 and I5 are each provided with substantially semi-circular integral outwardly extending flanges I8 and I9, respectively, which are interconnected by means of a series of bolts 20 or the like.

Each of the sections I4 and I5 is respectively supplied with an integrally formed horizontally and outwardly extending iitting 2l and 22 in each of which is respectively threaded a collar 23 and 24.

Revolubly mounted in the collars 23 and 24 and extending through the ttings 2| and 22 and the interior of the sections I 4 and I5 is a longitudinally disposed outer cylindrical member 25.

The sections I4 and I5 are each provided with a vertical wall section 26 and 21, respectively, which sections extend somewhat into the complementary motor sections I4 and I5 and overlap, as indicated at 28.

The upper ends of the wall members 26 and 21 are curved, asindic'ated at 29 and 30, to form an additional support for the outer cylindrical member 25.

Exteriorly threaded upon the forward end of the outer cylindrical member 25 is a cap 3I having a gasket 32 mounted therein. Centrally` and longitudinally threaded in the cap 3l is a screw 33 provided'with a beaded inner end 34 and a lock nut 35 is threaded upon the screw 33.

An inner'cylindrical member 36 is revolubly mounted within the outer cylindrical member 25 and has a plug 31 sweated or otherwise permanently alixed in its forward end. The beaded end 34 of the screw 33 is adapted to bear against the outer side of the plug 31.

A fin or blade is generally indicated at 38 in Figure 2 and is adapted to snugly t within the motor housing. It is composed of a pair of metallic plates 39 andll which are welded to the outer cylindrical member, as indicated at 4I and 42, respectively, and an inner portion 43 of rubber or the like is sandwiched between the plates 39 and 40 and held permanently in position therein by means kof bolts, rivets or the like as indicated at 44.

A bulkhead 45 is afdxed in the inner cylindrical member 3E by sweating or the like and thus forms an intake chamber 46 andan exhaust chamber 41 within the inner cylindrical member 36. The bulkhead 45 is so positioned in the member 36 as to be normally disposed midway between the outer walls of the housing sections I4 and I5.

An anchor bolt 48 is threaded diametrically through the inner cylindrical member 36 and extends through a slot 49 formed circumferentially in the outer cylindrical member 25 and is provided with an integrally formed eye 50 at its outer end. The bolt 48 extends into the exhaust compartment 41 in the member 36.

A like anchor bolt i extends diametrically into the member 36 and into the intake compartment 46 thereof and also extends through an arcuate slot 52 formed in the outer cylindrical member 25. The slots 49 and 52 are each 90 in length and the bolts 48 and 5I extend outwardly from the members 36 and 25 at one hundred eighty degree angles from each other. The outer end of the bolt 5I is provided with an eye 53. The bolts 48 andl extend in a plane which is perpendicular to the plane of the nn 38.

Each of the housing sections I4 and I5 is provided with an outwardly extending indentation 54 and 55, respectively. A pair of shock absorbing devices is incorporated in the device as a part thereof and each consists of an outer cylinder 55 having an integrally formed substantially conical outer end 51 which is positioned in one of the indentations 54 or 55. There is also provided an inner cylinder 56 which is slidably mounted in the inner end of the outer cylinder 56 and which is, in turn, provided with an eye 59 at its inner end which eye 59 is connected with either of the eyes 56 or 53, as the case may be. Encompassed by the inner and outer cylinders 56 and 58 in each case is a compression spring 66. The inner end of the outer cylindrical member 25 is exteriorly threaded, as indicated at 6I, for the reception thereon of a conventional perforated water supply pipe. Within the motor housing sections I4 and I5, the outer cylindrical member 25 is provided upon one side of the 1in 38 with a circular inlet opening 62 and a circular exhaust opening 63. It is alsoY provided with an exhaust opening 64, likewise circular in shape,

adjacent its forward end. The inner cylindrical member 36 is provided with a circumferentially extending slot 65 adjacent its forward end and this slot extends for approximately 90. z The member 35 is also provided with a pair of circumferentially extending slots 66 and 61 which are adapted to register with the openings 62 and 63, respectively, and which extend approximately 45 circumferentially of the member 36.

The member 25 is provided with a circular intake opening 68 and a circular intake opening 69 which openings are located upon the opposite side of the fin 38 to the openings 62 and 63. The member 36 is provided with a pair of circumferentially extending slots 1D and 1I which are adapted to register with the openingsl 68 and 69 and which slots extend a distance of 45 in the member 36.

The operation is as follows: water under pressure will be received from the perforated pipes (not shown) attached to the outer cylindrical member 25 at the threaded portion 6I thereof and as it passes through the device forming the present invention and is eventually. exhausted through the opening 64 it will cause .an oscillating movement of the perforated pipe to thus distribute water constantly over a large area. Assuming that the fin 38 is in its extreme counterclockwise position or to the left as viewed in Figure 2 of the drawings, water entering the device will first proceed to the chamber 46 and thence escape through the slot 66 and thence through the openings 62 to thereby build up pressure upon the left side of the iin 38 to thus move the same in a clockwise position. As this action occurs, eventually the shock absorbing members in the cylinders 56 and 58 will be compressed to their smallest longitudinal dimensions. This will occur at a time when the bolts 48 and 5I are horizontally disposed. Since the fin 38 has now almost reached its extreme clockwise position, further admission of water through the slot 66 and opening 62 will cause an immediate further movement through an arc of 45 of the inner cylindrical member 36 due to the action of the compression springs 66 now acting in the same direction as the pressure of water as aforesaid. During this operation, water previously admitted into the motor housing upon the right hand side of the n 38, still as viewed in Figure 2, will be constantly exhausted through the slot 61 and opening 63 to the chamber 41 whence it will escape to the atmosphere through the slot 65 and opening 64, it being understood that the slot 65 will always be in registry with the opening 64. When the nn 38 has reached its extreme clockwise position as aforesaid, the slot 10 will register with the opening 68 to again supply water under pressure to the right hand side of the iin 28, still as viewed in Figure 2, to thus reverse the action above described. During the movement of the nn 38 in a'counterclockwise direction the slot 61 and the opening 63 will register to thus allow the water previously admitted to the left hand side of the iin 38 to escape into the chamber 41 after which it willbe allowed to escape to the atmosphere through the slot 65 and opening 64. Since the perforated pipe previously referred to is amxed to the outer cylindrical member 36, the same will be oscillated as aforesaid. In order to properly align the various slots and openings above referred to in the members 25 and 36, it is only necessary to loosen the lock nut `35 and thereafter adjust the screw 33 in the cap 3i to a proper position, thereafter again locking the nut 35 against the cap 3|.

While but one form of the invention has been shown and described herein, it will be readily apparent to those skilled in the art that many minor modifications may be made without departing from vthe spirit of the invention or theV scope of the appended claims.

What is claimed is:

1. A device of the characterdescribed comprising a housing, a supply pipe revolubly and horizontally disposed in said housing, a n afxed to said supply pipe and snugly fitting the inner walls of said housing and adapted to oscillate in said housing, valves for alternately supplying iluid to opposite sides of said iin to oscillate the same, and means for absorbing conventional shock at the end of each oscillation of said iin,v

said means including a pair of shock absorbers each extending outwardly from said pipe at opposite sides of said n and each bearing against thev inner walls of said housing and each composed of an outer cylinder, an inner cylinder longi-f tudmally slidable in said outer cylinder, anda;

compression spring encompassed by said inner and outer cylinders-said outer cylinders each y having a conical outer end and said inner walls of the housing having outwardly extending indentations for receiving said conical outer ends therein. .Y Y

2. A device of the character described comprising a housing, a supply pipe horizontally and revolubiy disposed in said housing, a n aiiixed in said supply pipe and snugly tting the inner walls of said housing, an inner cylindrical member snugly and revolubly mounted in said supply pipe, said inner member having openings therein, said outer member having openings selectively registerable with the openings in said pipe, said inner member having'a bulkhead therein dividing the same into a pair of compartments, means for adjusting vthe registration between the openings in the pipe and the openings in the inner member, and means for absorbing conventional shock at the end of each oscillation of said fin, said means including a pair of shock absorbers each extending outwardly from said pipe at opposite sides of said fin and each bearing against the inner walls of said housing and each composed of anoutercylinder, an inner cylinder longitudinally slidable in said outer cylinder, and a compressionspring encompassed by said inner and outer cylinders, said outer cylinders each having a conical outer end and said inner walls of the housing having outwardly extending indentations f for receiving said conical outer ends therein, and

said inner cylinders of said shock absorbing means each being pivotally anchored to said inner cylindrical member.

LEWIS R. SWANK.

References cited in. the me of this patent UNITED sTATEs PATENTS 

